On 8/25/2019 6:08 PM, Jason Resch wrote:
On Sunday, August 25, 2019, 'Brent Meeker' via Everything List
<[email protected]
<mailto:[email protected]>> wrote:
On 8/25/2019 12:50 PM, Jason Resch wrote:
What's the difference between abstract and concrete? I think
it's only a matter of relative perspective. Other universes to us
seem abstract. While to people in other universes ours would
seem abstract. Do you agree?
No. The difference is one of completeness.
I wasn't assuming incompleteness when I used the term abstract. That's
why I stipulated isomorphically identical.
A abstract something is incomplete. The verb is "to abstract"
meaning to leave aside irrelevant things. But a universe doesn' t
have anything "left aside". That's why I look at it the other way
around when you talk about a "simulation" that is isomorphic to
our universe.
Could you clarify this point, I'm not sure I follow.
If it's a /complete and perfect simulation/, then it's a
universe itself. It can't be /just/ a mathematical structure,
it's identical to what you think it is "simulating".
Why can't a simulation be a mathematical structure?
It can. Like 2 is a simulation of pairs. But as a simulation it must
be relative to an environment which is not a simulation. Which means it
can't be THE reality.
Brent
Computations and Turing machines are mathematical objects.
Jason
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